/**
 * Copyright (c) 2006-2012, JGraph Ltd
 */
/**
 * Constructs a new graph editor
 */
Menus = function(editorUi)
{
    this.editorUi = editorUi;
    this.menus = new Object();
    this.init();

    // Pre-fetches checkmark image
    if (!mxClient.IS_SVG)
    {
        new Image().src = this.checkmarkImage;
    }
};

/**
 * Sets the default font family.
 */
Menus.prototype.defaultFont = 'Helvetica';

/**
 * Sets the default font size.
 */
Menus.prototype.defaultFontSize = '12';

/**
 * Sets the default font size.
 */
Menus.prototype.defaultMenuItems = ['file', 'edit', 'view', 'arrange', 'extras', 'help'];

/**
 * Adds the label menu items to the given menu and parent.
 */
Menus.prototype.defaultFonts = ['Helvetica', 'Verdana', 'Times New Roman', 'Garamond', 'Comic Sans MS',
    'Courier New', 'Georgia', 'Lucida Console', 'Tahoma'];

/**
 * Adds the label menu items to the given menu and parent.
 */
Menus.prototype.init = function()
{
    var graph = this.editorUi.editor.graph;
    var isGraphEnabled = mxUtils.bind(graph, graph.isEnabled);

    this.customFonts = [];
    this.customFontSizes = [];

    this.put('fontFamily', new Menu(mxUtils.bind(this, function(menu, parent)
    {
        var addItem = mxUtils.bind(this, function(fontname)
        {
            var tr = this.styleChange(menu, fontname, [mxConstants.STYLE_FONTFAMILY], [fontname], null, parent, function()
            {
                document.execCommand('fontname', false, fontname);
            }, function()
            {
                graph.updateLabelElements(graph.getSelectionCells(), function(elt)
                {
                    elt.removeAttribute('face');
                    elt.style.fontFamily = null;

                    if (elt.nodeName == 'PRE')
                    {
                        graph.replaceElement(elt, 'div');
                    }
                });
            });
            tr.firstChild.nextSibling.style.fontFamily = fontname;
        });

        for (var i = 0; i < this.defaultFonts.length; i++)
        {
            addItem(this.defaultFonts[i]);
        }

        menu.addSeparator(parent);

        if (this.customFonts.length > 0)
        {
            for (var i = 0; i < this.customFonts.length; i++)
            {
                addItem(this.customFonts[i]);
            }

            menu.addSeparator(parent);

            menu.addItem(mxResources.get('reset'), null, mxUtils.bind(this, function()
            {
                this.customFonts = [];
                this.editorUi.fireEvent(new mxEventObject('customFontsChanged'));
            }), parent);

            menu.addSeparator(parent);
        }

        this.promptChange(menu, mxResources.get('custom') + '...', '', mxConstants.DEFAULT_FONTFAMILY, mxConstants.STYLE_FONTFAMILY, parent, true, mxUtils.bind(this, function(newValue)
        {
            if (mxUtils.indexOf(this.customFonts, newValue) < 0)
            {
                this.customFonts.push(newValue);
                this.editorUi.fireEvent(new mxEventObject('customFontsChanged'));
            }
        }));
    })));
    this.put('formatBlock', new Menu(mxUtils.bind(this, function(menu, parent)
    {
        function addItem(label, tag)
        {
            return menu.addItem(label, null, mxUtils.bind(this, function()
            {
                // TODO: Check if visible
                if (graph.cellEditor.textarea != null)
                {
                    graph.cellEditor.textarea.focus();
                    document.execCommand('formatBlock', false, '<' + tag + '>');
                }
            }), parent);
        };

        addItem(mxResources.get('normal'), 'p');

        addItem('', 'h1').firstChild.nextSibling.innerHTML = '<h1 style="margin:0px;">' + mxResources.get('heading') + ' 1</h1>';
        addItem('', 'h2').firstChild.nextSibling.innerHTML = '<h2 style="margin:0px;">' + mxResources.get('heading') + ' 2</h2>';
        addItem('', 'h3').firstChild.nextSibling.innerHTML = '<h3 style="margin:0px;">' + mxResources.get('heading') + ' 3</h3>';
        addItem('', 'h4').firstChild.nextSibling.innerHTML = '<h4 style="margin:0px;">' + mxResources.get('heading') + ' 4</h4>';
        addItem('', 'h5').firstChild.nextSibling.innerHTML = '<h5 style="margin:0px;">' + mxResources.get('heading') + ' 5</h5>';
        addItem('', 'h6').firstChild.nextSibling.innerHTML = '<h6 style="margin:0px;">' + mxResources.get('heading') + ' 6</h6>';

        addItem('', 'pre').firstChild.nextSibling.innerHTML = '<pre style="margin:0px;">' + mxResources.get('formatted') + '</pre>';
        addItem('', 'blockquote').firstChild.nextSibling.innerHTML = '<blockquote style="margin-top:0px;margin-bottom:0px;">' + mxResources.get('blockquote') + '</blockquote>';
    })));
    this.put('fontSize', new Menu(mxUtils.bind(this, function(menu, parent)
    {
        var sizes = [6, 8, 9, 10, 11, 12, 14, 18, 24, 36, 48, 72];

        var addItem = mxUtils.bind(this, function(fontsize)
        {
            this.styleChange(menu, fontsize, [mxConstants.STYLE_FONTSIZE], [fontsize], null, parent, function()
            {
                if (graph.cellEditor.textarea != null)
                {
                    // Creates an element with arbitrary size 3
                    document.execCommand('fontSize', false, '3');

                    // Changes the css font size of the first font element inside the in-place editor with size 3
                    // hopefully the above element that we've just created. LATER: Check for new element using
                    // previous result of getElementsByTagName (see other actions)
                    var elts = graph.cellEditor.textarea.getElementsByTagName('font');

                    for (var i = 0; i < elts.length; i++)
                    {
                        if (elts[i].getAttribute('size') == '3')
                        {
                            elts[i].removeAttribute('size');
                            elts[i].style.fontSize = fontsize + 'px';

                            break;
                        }
                    }
                }
            });
        });

        for (var i = 0; i < sizes.length; i++)
        {
            addItem(sizes[i]);
        }

        menu.addSeparator(parent);

        if (this.customFontSizes.length > 0)
        {
            for (var i = 0; i < this.customFontSizes.length; i++)
            {
                addItem(this.customFontSizes[i]);
            }

            menu.addSeparator(parent);

            menu.addItem(mxResources.get('reset'), null, mxUtils.bind(this, function()
            {
                this.customFontSizes = [];
            }), parent);

            menu.addSeparator(parent);
        }

        this.promptChange(menu, mxResources.get('custom') + '...', '(pt)', '12', mxConstants.STYLE_FONTSIZE, parent, true, mxUtils.bind(this, function(newValue)
        {
            this.customFontSizes.push(newValue);
        }));
    })));
    this.put('direction', new Menu(mxUtils.bind(this, function(menu, parent)
    {
        menu.addItem(mxResources.get('flipH'), null, function() { graph.toggleCellStyles(mxConstants.STYLE_FLIPH, false); }, parent);
        menu.addItem(mxResources.get('flipV'), null, function() { graph.toggleCellStyles(mxConstants.STYLE_FLIPV, false); }, parent);
        this.addMenuItems(menu, ['-', 'rotation'], parent);
    })));
    this.put('align', new Menu(mxUtils.bind(this, function(menu, parent)
    {
        menu.addItem(mxResources.get('leftAlign'), null, function() { graph.alignCells(mxConstants.ALIGN_LEFT); }, parent);
        menu.addItem(mxResources.get('center'), null, function() { graph.alignCells(mxConstants.ALIGN_CENTER); }, parent);
        menu.addItem(mxResources.get('rightAlign'), null, function() { graph.alignCells(mxConstants.ALIGN_RIGHT); }, parent);
        menu.addSeparator(parent);
        menu.addItem(mxResources.get('topAlign'), null, function() { graph.alignCells(mxConstants.ALIGN_TOP); }, parent);
        menu.addItem(mxResources.get('middle'), null, function() { graph.alignCells(mxConstants.ALIGN_MIDDLE); }, parent);
        menu.addItem(mxResources.get('bottomAlign'), null, function() { graph.alignCells(mxConstants.ALIGN_BOTTOM); }, parent);
    })));
    this.put('distribute', new Menu(mxUtils.bind(this, function(menu, parent)
    {
        menu.addItem(mxResources.get('horizontal'), null, function() { graph.distributeCells(true); }, parent);
        menu.addItem(mxResources.get('vertical'), null, function() { graph.distributeCells(false); }, parent);
    })));
    this.put('layout', new Menu(mxUtils.bind(this, function(menu, parent)
    {
        var promptSpacing = mxUtils.bind(this, function(defaultValue, fn)
        {
            var dlg = new FilenameDialog(this.editorUi, defaultValue, mxResources.get('apply'), function(newValue)
            {
                fn(parseFloat(newValue));
            }, mxResources.get('spacing'));
            this.editorUi.showDialog(dlg.container, 300, 80, true, true);
            dlg.init();
        });

        menu.addItem(mxResources.get('horizontalFlow'), null, mxUtils.bind(this, function()
        {
            var layout = new mxHierarchicalLayout(graph, mxConstants.DIRECTION_WEST);

            this.editorUi.executeLayout(function()
            {
                var selectionCells = graph.getSelectionCells();
                layout.execute(graph.getDefaultParent(), selectionCells.length == 0 ? null : selectionCells);
            }, true);
        }), parent);
        menu.addItem(mxResources.get('verticalFlow'), null, mxUtils.bind(this, function()
        {
            var layout = new mxHierarchicalLayout(graph, mxConstants.DIRECTION_NORTH);

            this.editorUi.executeLayout(function()
            {
                var selectionCells = graph.getSelectionCells();
                layout.execute(graph.getDefaultParent(), selectionCells.length == 0 ? null : selectionCells);
            }, true);
        }), parent);
        menu.addSeparator(parent);
        menu.addItem(mxResources.get('horizontalTree'), null, mxUtils.bind(this, function()
        {
            var tmp = graph.getSelectionCell();
            var roots = null;

            if (tmp == null || graph.getModel().getChildCount(tmp) == 0)
            {
                if (graph.getModel().getEdgeCount(tmp) == 0)
                {
                    roots = graph.findTreeRoots(graph.getDefaultParent());
                }
            }
            else
            {
                roots = graph.findTreeRoots(tmp);
            }

            if (roots != null && roots.length > 0)
            {
                tmp = roots[0];
            }

            if (tmp != null)
            {
                var layout = new mxCompactTreeLayout(graph, true);
                layout.edgeRouting = false;
                layout.levelDistance = 30;

                promptSpacing(layout.levelDistance, mxUtils.bind(this, function(newValue)
                {
                    layout.levelDistance = newValue;

                    this.editorUi.executeLayout(function()
                    {
                        layout.execute(graph.getDefaultParent(), tmp);
                    }, true);
                }));
            }
        }), parent);
        menu.addItem(mxResources.get('verticalTree'), null, mxUtils.bind(this, function()
        {
            var tmp = graph.getSelectionCell();
            var roots = null;

            if (tmp == null || graph.getModel().getChildCount(tmp) == 0)
            {
                if (graph.getModel().getEdgeCount(tmp) == 0)
                {
                    roots = graph.findTreeRoots(graph.getDefaultParent());
                }
            }
            else
            {
                roots = graph.findTreeRoots(tmp);
            }

            if (roots != null && roots.length > 0)
            {
                tmp = roots[0];
            }

            if (tmp != null)
            {
                var layout = new mxCompactTreeLayout(graph, false);
                layout.edgeRouting = false;
                layout.levelDistance = 30;

                promptSpacing(layout.levelDistance, mxUtils.bind(this, function(newValue)
                {
                    layout.levelDistance = newValue;

                    this.editorUi.executeLayout(function()
                    {
                        layout.execute(graph.getDefaultParent(), tmp);
                    }, true);
                }));
            }
        }), parent);
        menu.addItem(mxResources.get('radialTree'), null, mxUtils.bind(this, function()
        {
            var tmp = graph.getSelectionCell();
            var roots = null;

            if (tmp == null || graph.getModel().getChildCount(tmp) == 0)
            {
                if (graph.getModel().getEdgeCount(tmp) == 0)
                {
                    roots = graph.findTreeRoots(graph.getDefaultParent());
                }
            }
            else
            {
                roots = graph.findTreeRoots(tmp);
            }

            if (roots != null && roots.length > 0)
            {
                tmp = roots[0];
            }

            if (tmp != null)
            {
                var layout = new mxRadialTreeLayout(graph, false);
                layout.levelDistance = 80;
                layout.autoRadius = true;

                promptSpacing(layout.levelDistance, mxUtils.bind(this, function(newValue)
                {
                    layout.levelDistance = newValue;

                    this.editorUi.executeLayout(function()
                    {
                        layout.execute(graph.getDefaultParent(), tmp);

                        if (!graph.isSelectionEmpty())
                        {
                            tmp = graph.getModel().getParent(tmp);

                            if (graph.getModel().isVertex(tmp))
                            {
                                graph.updateGroupBounds([tmp], graph.gridSize * 2, true);
                            }
                        }
                    }, true);
                }));
            }
        }), parent);
        menu.addSeparator(parent);
        menu.addItem(mxResources.get('organic'), null, mxUtils.bind(this, function()
        {
            var layout = new mxFastOrganicLayout(graph);

            promptSpacing(layout.forceConstant, mxUtils.bind(this, function(newValue)
            {
                layout.forceConstant = newValue;

                this.editorUi.executeLayout(function()
                {
                    var tmp = graph.getSelectionCell();

                    if (tmp == null || graph.getModel().getChildCount(tmp) == 0)
                    {
                        tmp = graph.getDefaultParent();
                    }

                    layout.execute(tmp);

                    if (graph.getModel().isVertex(tmp))
                    {
                        graph.updateGroupBounds([tmp], graph.gridSize * 2, true);
                    }
                }, true);
            }));
        }), parent);
        menu.addItem(mxResources.get('circle'), null, mxUtils.bind(this, function()
        {
            var layout = new mxCircleLayout(graph);

            this.editorUi.executeLayout(function()
            {
                var tmp = graph.getSelectionCell();

                if (tmp == null || graph.getModel().getChildCount(tmp) == 0)
                {
                    tmp = graph.getDefaultParent();
                }

                layout.execute(tmp);

                if (graph.getModel().isVertex(tmp))
                {
                    graph.updateGroupBounds([tmp], graph.gridSize * 2, true);
                }
            }, true);
        }), parent);
    })));
    this.put('navigation', new Menu(mxUtils.bind(this, function(menu, parent)
    {
        this.addMenuItems(menu, ['home', '-', 'exitGroup', 'enterGroup', '-', 'expand', 'collapse', '-', 'collapsible'], parent);
    })));
    this.put('arrange', new Menu(mxUtils.bind(this, function(menu, parent)
    {
        this.addMenuItems(menu, ['toFront', 'toBack', '-'], parent);
        this.addSubmenu('direction', menu, parent);
        this.addMenuItems(menu, ['turn', '-'], parent);
        this.addSubmenu('align', menu, parent);
        this.addSubmenu('distribute', menu, parent);
        menu.addSeparator(parent);
        this.addSubmenu('navigation', menu, parent);
        this.addSubmenu('insert', menu, parent);
        this.addSubmenu('layout', menu, parent);
        this.addMenuItems(menu, ['-', 'group', 'ungroup', 'removeFromGroup', '-', 'clearWaypoints', 'autosize'], parent);
    }))).isEnabled = isGraphEnabled;
    this.put('insert', new Menu(mxUtils.bind(this, function(menu, parent)
    {
        this.addMenuItems(menu, ['insertLink', 'insertImage'], parent);
    })));
    this.put('view', new Menu(mxUtils.bind(this, function(menu, parent)
    {
        this.addMenuItems(menu, ((this.editorUi.format != null) ? ['formatPanel'] : []).
        concat(['outline', 'layers', '-', 'pageView', 'pageScale', '-', 'scrollbars', 'tooltips', '-',
            'grid', 'guides', '-', 'connectionArrows', 'connectionPoints', '-',
            'resetView', 'zoomIn', 'zoomOut'], parent));
    })));
    // Two special dropdowns that are only used in the toolbar
    this.put('viewPanels', new Menu(mxUtils.bind(this, function(menu, parent)
    {
        if (this.editorUi.format != null)
        {
            this.addMenuItems(menu, ['formatPanel'], parent);
        }

        this.addMenuItems(menu, ['outline', 'layers'], parent);
    })));
    this.put('viewZoom', new Menu(mxUtils.bind(this, function(menu, parent)
    {
        this.addMenuItems(menu, ['resetView', '-'], parent);
        var scales = [0.25, 0.5, 0.75, 1, 1.25, 1.5, 2, 3, 4];

        for (var i = 0; i < scales.length; i++)
        {
            (function(scale)
            {
                menu.addItem((scale * 100) + '%', null, function()
                {
                    graph.zoomTo(scale);
                }, parent);
            })(scales[i]);
        }

        this.addMenuItems(menu, ['-', 'fitWindow', 'fitPageWidth', 'fitPage', 'fitTwoPages', '-', 'customZoom'], parent);
    })));
    this.put('file', new Menu(mxUtils.bind(this, function(menu, parent)
    {
        this.addMenuItems(menu, ['new', '-', 'save', 'saveAs', '-', 'import', 'export', '-', 'pageSetup', 'print'], parent);
    })));
    this.put('edit', new Menu(mxUtils.bind(this, function(menu, parent)
    {
        this.addMenuItems(menu, ['undo', 'redo', '-', 'cut', 'copy', 'paste', 'delete', '-', 'duplicate', '-',
            'editData', 'editTooltip', 'editStyle', '-', 'edit', '-', 'editLink', 'openLink', '-',
            'selectVertices', 'selectEdges', 'selectAll', 'selectNone', '-', 'lockUnlock']);
    })));
    this.put('extras', new Menu(mxUtils.bind(this, function(menu, parent)
    {
        this.addMenuItems(menu, ['copyConnect', 'collapseExpand', '-', 'editDiagram']);
    })));
    this.put('help', new Menu(mxUtils.bind(this, function(menu, parent)
    {
        this.addMenuItems(menu, ['help', '-', 'about']);
    })));
};

/**
 * Adds the label menu items to the given menu and parent.
 */
Menus.prototype.put = function(name, menu)
{
    this.menus[name] = menu;

    return menu;
};

/**
 * Adds the label menu items to the given menu and parent.
 */
Menus.prototype.get = function(name)
{
    return this.menus[name];
};

/**
 * Adds the given submenu.
 */
Menus.prototype.addSubmenu = function(name, menu, parent, label)
{
    var entry = this.get(name);

    if (entry != null)
    {
        var enabled = entry.isEnabled();

        if (menu.showDisabled || enabled)
        {
            var submenu = menu.addItem(label || mxResources.get(name), null, null, parent, null, enabled);
            this.addMenu(name, menu, submenu);
        }
    }
};

/**
 * Adds the label menu items to the given menu and parent.
 */
Menus.prototype.addMenu = function(name, popupMenu, parent)
{
    var menu = this.get(name);

    if (menu != null && (popupMenu.showDisabled || menu.isEnabled()))
    {
        this.get(name).execute(popupMenu, parent);
    }
};

/**
 * Adds a menu item to insert a table.
 */
Menus.prototype.addInsertTableItem = function(menu)
{
    // KNOWN: Does not work in IE8 standards and quirks
    var graph = this.editorUi.editor.graph;

    function createTable(rows, cols)
    {
        var html = ['<table>'];

        for (var i = 0; i < rows; i++)
        {
            html.push('<tr>');

            for (var j = 0; j < cols; j++)
            {
                html.push('<td><br></td>');
            }

            html.push('</tr>');
        }

        html.push('</table>');

        return html.join('');
    };

    // Show table size dialog
    var elt2 = menu.addItem('', null, mxUtils.bind(this, function(evt)
    {
        var td = graph.getParentByName(mxEvent.getSource(evt), 'TD');

        if (td != null && graph.cellEditor.textarea != null)
        {
            var row2 = graph.getParentByName(td, 'TR');

            // To find the new link, we create a list of all existing links first
            // LATER: Refactor for reuse with code for finding inserted image below
            var tmp = graph.cellEditor.textarea.getElementsByTagName('table');
            var oldTables = [];

            for (var i = 0; i < tmp.length; i++)
            {
                oldTables.push(tmp[i]);
            }

            // Finding the new table will work with insertHTML, but IE does not support that
            graph.container.focus();
            graph.pasteHtmlAtCaret(createTable(row2.sectionRowIndex + 1, td.cellIndex + 1));

            // Moves cursor to first table cell
            var newTables = graph.cellEditor.textarea.getElementsByTagName('table');

            if (newTables.length == oldTables.length + 1)
            {
                // Inverse order in favor of appended tables
                for (var i = newTables.length - 1; i >= 0; i--)
                {
                    if (i == 0 || newTables[i] != oldTables[i - 1])
                    {
                        graph.selectNode(newTables[i].rows[0].cells[0]);
                        break;
                    }
                }
            }
        }
    }));

    // Quirks mode does not add cell padding if cell is empty, needs good old spacer solution
    var quirksCellHtml = '<img src="' + mxClient.imageBasePath + '/transparent.gif' + '" width="16" height="16"/>';

    function createPicker(rows, cols)
    {
        var table2 = document.createElement('table');
        table2.setAttribute('border', '1');
        table2.style.borderCollapse = 'collapse';

        if (!mxClient.IS_QUIRKS)
        {
            table2.setAttribute('cellPadding', '8');
        }

        for (var i = 0; i < rows; i++)
        {
            var row = table2.insertRow(i);

            for (var j = 0; j < cols; j++)
            {
                var cell = row.insertCell(-1);

                if (mxClient.IS_QUIRKS)
                {
                    cell.innerHTML = quirksCellHtml;
                }
            }
        }

        return table2;
    };

    function extendPicker(picker, rows, cols)
    {
        for (var i = picker.rows.length; i < rows; i++)
        {
            var row = picker.insertRow(i);

            for (var j = 0; j < picker.rows[0].cells.length; j++)
            {
                var cell = row.insertCell(-1);

                if (mxClient.IS_QUIRKS)
                {
                    cell.innerHTML = quirksCellHtml;
                }
            }
        }

        for (var i = 0; i < picker.rows.length; i++)
        {
            var row = picker.rows[i];

            for (var j = row.cells.length; j < cols; j++)
            {
                var cell = row.insertCell(-1);

                if (mxClient.IS_QUIRKS)
                {
                    cell.innerHTML = quirksCellHtml;
                }
            }
        }
    };

    elt2.firstChild.innerHTML = '';
    var picker = createPicker(5, 5);
    elt2.firstChild.appendChild(picker);

    var label = document.createElement('div');
    label.style.padding = '4px';
    label.style.fontSize = Menus.prototype.defaultFontSize + 'px';
    label.innerHTML = '1x1';
    elt2.firstChild.appendChild(label);

    mxEvent.addListener(picker, 'mouseover', function(e)
    {
        var td = graph.getParentByName(mxEvent.getSource(e), 'TD');

        if (td != null)
        {
            var row2 = graph.getParentByName(td, 'TR');
            extendPicker(picker, Math.min(20, row2.sectionRowIndex + 2), Math.min(20, td.cellIndex + 2));
            label.innerHTML = (td.cellIndex + 1) + 'x' + (row2.sectionRowIndex + 1);

            for (var i = 0; i < picker.rows.length; i++)
            {
                var r = picker.rows[i];

                for (var j = 0; j < r.cells.length; j++)
                {
                    var cell = r.cells[j];

                    if (i <= row2.sectionRowIndex && j <= td.cellIndex)
                    {
                        cell.style.backgroundColor = 'blue';
                    }
                    else
                    {
                        cell.style.backgroundColor = 'white';
                    }
                }
            }

            mxEvent.consume(e);
        }
    });
};

/**
 * Adds a style change item to the given menu.
 */
Menus.prototype.edgeStyleChange = function(menu, label, keys, values, sprite, parent, reset)
{
    return menu.addItem(label, null, mxUtils.bind(this, function()
    {
        var graph = this.editorUi.editor.graph;
        graph.stopEditing(false);

        graph.getModel().beginUpdate();
        try
        {
            var cells = graph.getSelectionCells();
            var edges = [];

            for (var i = 0; i < cells.length; i++)
            {
                var cell = cells[i];

                if (graph.getModel().isEdge(cell))
                {
                    if (reset)
                    {
                        var geo = graph.getCellGeometry(cell);

                        // Resets all edge points
                        if (geo != null)
                        {
                            geo = geo.clone();
                            geo.points = null;
                            graph.getModel().setGeometry(cell, geo);
                        }
                    }

                    for (var j = 0; j < keys.length; j++)
                    {
                        graph.setCellStyles(keys[j], values[j], [cell]);
                    }

                    edges.push(cell);
                }
            }

            this.editorUi.fireEvent(new mxEventObject('styleChanged', 'keys', keys,
                'values', values, 'cells', edges));
        }
        finally
        {
            graph.getModel().endUpdate();
        }
    }), parent, sprite);
};

/**
 * Adds a style change item to the given menu.
 */
Menus.prototype.styleChange = function(menu, label, keys, values, sprite, parent, fn, post)
{
    var apply = this.createStyleChangeFunction(keys, values);

    return menu.addItem(label, null, mxUtils.bind(this, function()
    {
        var graph = this.editorUi.editor.graph;

        if (fn != null && graph.cellEditor.isContentEditing())
        {
            fn();
        }
        else
        {
            apply(post);
        }
    }), parent, sprite);
};

/**
 *
 */
Menus.prototype.createStyleChangeFunction = function(keys, values)
{
    return mxUtils.bind(this, function(post)
    {
        var graph = this.editorUi.editor.graph;
        graph.stopEditing(false);

        graph.getModel().beginUpdate();
        try
        {
            for (var i = 0; i < keys.length; i++)
            {
                graph.setCellStyles(keys[i], values[i]);

                // Removes CSS alignment to produce consistent output
                if (keys[i] == mxConstants.STYLE_ALIGN)
                {
                    graph.updateLabelElements(graph.getSelectionCells(), function(elt)
                    {
                        elt.removeAttribute('align');
                        elt.style.textAlign = null;
                    });
                }
            }

            if (post != null)
            {
                post();
            }

            this.editorUi.fireEvent(new mxEventObject('styleChanged', 'keys', keys, 'values', values,
                'cells', graph.getSelectionCells()));
        }
        finally
        {
            graph.getModel().endUpdate();
        }
    });
};

/**
 * Adds a style change item with a prompt to the given menu.
 */
Menus.prototype.promptChange = function(menu, label, hint, defaultValue, key, parent, enabled, fn, sprite)
{
    return menu.addItem(label, null, mxUtils.bind(this, function()
    {
        var graph = this.editorUi.editor.graph;
        var value = defaultValue;
        var state = graph.getView().getState(graph.getSelectionCell());

        if (state != null)
        {
            value = state.style[key] || value;
        }

        var dlg = new FilenameDialog(this.editorUi, value, mxResources.get('apply'), mxUtils.bind(this, function(newValue)
        {
            if (newValue != null && newValue.length > 0)
            {
                graph.getModel().beginUpdate();
                try
                {
                    graph.stopEditing(false);
                    graph.setCellStyles(key, newValue);
                }
                finally
                {
                    graph.getModel().endUpdate();
                }

                if (fn != null)
                {
                    fn(newValue);
                }
            }
        }), mxResources.get('enterValue') + ((hint.length > 0) ? (' ' + hint) : ''));
        this.editorUi.showDialog(dlg.container, 300, 80, true, true);
        dlg.init();
    }), parent, sprite, enabled);
};

/**
 * Adds a handler for showing a menu in the given element.
 */
Menus.prototype.pickColor = function(key, cmd, defaultValue)
{
    var graph = this.editorUi.editor.graph;
    var h = 226 + ((Math.ceil(ColorDialog.prototype.presetColors.length / 12) +
        Math.ceil(ColorDialog.prototype.defaultColors.length / 12)) * 17);

    if (cmd != null && graph.cellEditor.isContentEditing())
    {
        // Saves and restores text selection for in-place editor
        var selState = graph.cellEditor.saveSelection();

        var dlg = new ColorDialog(this.editorUi, defaultValue || '000000', mxUtils.bind(this, function(color)
        {
            graph.cellEditor.restoreSelection(selState);
            document.execCommand(cmd, false, (color != mxConstants.NONE) ? color : 'transparent');
        }), function()
        {
            graph.cellEditor.restoreSelection(selState);
        });
        this.editorUi.showDialog(dlg.container, 230, h, true, true);
        dlg.init();
    }
    else
    {
        if (this.colorDialog == null)
        {
            this.colorDialog = new ColorDialog(this.editorUi);
        }

        this.colorDialog.currentColorKey = key;
        var state = graph.getView().getState(graph.getSelectionCell());
        var color = 'none';

        if (state != null)
        {
            color = state.style[key] || color;
        }

        if (color == 'none')
        {
            color = 'ffffff';
            this.colorDialog.picker.fromString('ffffff');
            this.colorDialog.colorInput.value = 'none';
        }
        else
        {
            this.colorDialog.picker.fromString(color);
        }

        this.editorUi.showDialog(this.colorDialog.container, 230, h, true, true);
        this.colorDialog.init();
    }
};

/**
 * Adds a handler for showing a menu in the given element.
 */
Menus.prototype.toggleStyle = function(key, defaultValue)
{
    var graph = this.editorUi.editor.graph;
    var value = graph.toggleCellStyles(key, defaultValue);
    this.editorUi.fireEvent(new mxEventObject('styleChanged', 'keys', [key], 'values', [value],
        'cells', graph.getSelectionCells()));
};

/**
 * Creates the keyboard event handler for the current graph and history.
 */
Menus.prototype.addMenuItem = function(menu, key, parent, trigger, sprite, label)
{
    var action = this.editorUi.actions.get(key);

    if (action != null && (menu.showDisabled || action.isEnabled()) && action.visible)
    {
        var item = menu.addItem(label || action.label, null, function()
        {
            action.funct(trigger);
        }, parent, sprite, action.isEnabled());

        // Adds checkmark image
        if (action.toggleAction && action.isSelected())
        {
            menu.addCheckmark(item, Editor.checkmarkImage);
        }

        this.addShortcut(item, action);

        return item;
    }

    return null;
};

/**
 * Adds a checkmark to the given menuitem.
 */
Menus.prototype.addShortcut = function(item, action)
{
    if (action.shortcut != null)
    {
        var td = item.firstChild.nextSibling.nextSibling;
        var span = document.createElement('span');
        span.style.color = 'gray';
        mxUtils.write(span, action.shortcut);
        td.appendChild(span);
    }
};

/**
 * Creates the keyboard event handler for the current graph and history.
 */
Menus.prototype.addMenuItems = function(menu, keys, parent, trigger, sprites)
{
    for (var i = 0; i < keys.length; i++)
    {
        if (keys[i] == '-')
        {
            menu.addSeparator(parent);
        }
        else
        {
            this.addMenuItem(menu, keys[i], parent, trigger, (sprites != null) ? sprites[i] : null);
        }
    }
};

/**
 * Creates the keyboard event handler for the current graph and history.
 */
Menus.prototype.createPopupMenu = function(menu, cell, evt)
{
    var graph = this.editorUi.editor.graph;
    menu.smartSeparators = true;

    if (graph.isSelectionEmpty())
    {
        this.addMenuItems(menu, ['undo', 'redo', 'pasteHere'], null, evt);
    }
    else
    {
        this.addMenuItems(menu, ['delete', '-', 'cut', 'copy', '-', 'duplicate'], null, evt);
    }

    if (!graph.isSelectionEmpty())
    {
        if (graph.getSelectionCount() == 1)
        {
            this.addMenuItems(menu, ['setAsDefaultStyle'], null, evt);
        }

        menu.addSeparator();

        cell = graph.getSelectionCell();
        var state = graph.view.getState(cell);

        if (state != null)
        {
            var hasWaypoints = false;
            this.addMenuItems(menu, ['toFront', 'toBack', '-'], null, evt);

            if (graph.getModel().isEdge(cell) && mxUtils.getValue(state.style, mxConstants.STYLE_EDGE, null) != 'entityRelationEdgeStyle' &&
                mxUtils.getValue(state.style, mxConstants.STYLE_SHAPE, null) != 'arrow')
            {
                var handler = graph.selectionCellsHandler.getHandler(cell);
                var isWaypoint = false;

                if (handler instanceof mxEdgeHandler && handler.bends != null && handler.bends.length > 2)
                {
                    var index = handler.getHandleForEvent(graph.updateMouseEvent(new mxMouseEvent(evt)));

                    // Configures removeWaypoint action before execution
                    // Using trigger parameter is cleaner but have to find waypoint here anyway.
                    var rmWaypointAction = this.editorUi.actions.get('removeWaypoint');
                    rmWaypointAction.handler = handler;
                    rmWaypointAction.index = index;

                    isWaypoint = index > 0 && index < handler.bends.length - 1;
                }

                menu.addSeparator();
                this.addMenuItem(menu, 'turn', null, evt, null, mxResources.get('reverse'));
                this.addMenuItems(menu, [(isWaypoint) ? 'removeWaypoint' : 'addWaypoint'], null, evt);

                // Adds reset waypoints option if waypoints exist
                var geo = graph.getModel().getGeometry(cell);
                hasWaypoints = geo != null && geo.points != null && geo.points.length > 0;
            }

            if (graph.getSelectionCount() == 1 && (hasWaypoints || (graph.getModel().isVertex(cell) &&
                graph.getModel().getEdgeCount(cell) > 0)))
            {
                this.addMenuItems(menu, ['clearWaypoints'], null, evt);
            }

            if (graph.getSelectionCount() > 1)
            {
                menu.addSeparator();
                this.addMenuItems(menu, ['group'], null, evt);
            }
            else if (graph.getSelectionCount() == 1 && !graph.getModel().isEdge(cell) && !graph.isSwimlane(cell) &&
                graph.getModel().getChildCount(cell) > 0)
            {
                menu.addSeparator();
                this.addMenuItems(menu, ['ungroup'], null, evt);
            }

            if (graph.getSelectionCount() == 1)
            {
                menu.addSeparator();
                this.addMenuItems(menu, ['editData', 'editLink'], null, evt);

                // Shows edit image action if there is an image in the style
                if (graph.getModel().isVertex(cell) && mxUtils.getValue(state.style, mxConstants.STYLE_IMAGE, null) != null)
                {
                    menu.addSeparator();
                    this.addMenuItem(menu, 'image', null, evt).firstChild.nextSibling.innerHTML = mxResources.get('editImage') + '...';
                }
            }
        }
    }
    else
    {
        this.addMenuItems(menu, ['-', 'selectVertices', 'selectEdges',
            'selectAll', '-', 'clearDefaultStyle'], null, evt);
    }
};

/**
 * Creates the keyboard event handler for the current graph and history.
 */
Menus.prototype.createMenubar = function(container)
{
    var menubar = new Menubar(this.editorUi, container);
    var menus = this.defaultMenuItems;

    for (var i = 0; i < menus.length; i++)
    {
        (mxUtils.bind(this, function(menu)
        {
            var elt = menubar.addMenu(mxResources.get(menus[i]), mxUtils.bind(this, function()
            {
                // Allows extensions of menu.funct
                menu.funct.apply(this, arguments);
            }));

            this.menuCreated(menu, elt);
        }))(this.get(menus[i]));
    }

    return menubar;
};

/**
 * Creates the keyboard event handler for the current graph and history.
 */
Menus.prototype.menuCreated = function(menu, elt, className)
{
    if (elt != null)
    {
        className = (className != null) ? className : 'geItem';

        menu.addListener('stateChanged', function()
        {
            elt.enabled = menu.enabled;

            if (!menu.enabled)
            {
                elt.className = className + ' mxDisabled';

                if (document.documentMode == 8)
                {
                    elt.style.color = '#c3c3c3';
                }
            }
            else
            {
                elt.className = className;

                if (document.documentMode == 8)
                {
                    elt.style.color = '';
                }
            }
        });
    }
};

/**
 * Construcs a new menubar for the given editor.
 */
function Menubar(editorUi, container)
{
    this.editorUi = editorUi;
    this.container = container;
};

/**
 * Adds the menubar elements.
 */
Menubar.prototype.hideMenu = function()
{
    this.editorUi.hideCurrentMenu();
};

/**
 * Adds a submenu to this menubar.
 */
Menubar.prototype.addMenu = function(label, funct, before)
{
    var elt = document.createElement('a');
    elt.className = 'geItem';
    mxUtils.write(elt, label);
    this.addMenuHandler(elt, funct);

    if (before != null)
    {
        this.container.insertBefore(elt, before);
    }
    else
    {
        this.container.appendChild(elt);
    }

    return elt;
};

/**
 * Adds a handler for showing a menu in the given element.
 */
Menubar.prototype.addMenuHandler = function(elt, funct)
{
    if (funct != null)
    {
        var show = true;

        var clickHandler = mxUtils.bind(this, function(evt)
        {
            if (show && elt.enabled == null || elt.enabled)
            {
                this.editorUi.editor.graph.popupMenuHandler.hideMenu();
                var menu = new mxPopupMenu(funct);
                menu.div.className += ' geMenubarMenu';
                menu.smartSeparators = true;
                menu.showDisabled = true;
                menu.autoExpand = true;

                // Disables autoexpand and destroys menu when hidden
                menu.hideMenu = mxUtils.bind(this, function()
                {
                    mxPopupMenu.prototype.hideMenu.apply(menu, arguments);
                    this.editorUi.resetCurrentMenu();
                    menu.destroy();
                });

                var offset = mxUtils.getOffset(elt);
                menu.popup(offset.x, offset.y + elt.offsetHeight, null, evt);
                this.editorUi.setCurrentMenu(menu, elt);
            }

            mxEvent.consume(evt);
        });

        // Shows menu automatically while in expanded state
        mxEvent.addListener(elt, 'mousemove', mxUtils.bind(this, function(evt)
        {
            if (this.editorUi.currentMenu != null && this.editorUi.currentMenuElt != elt)
            {
                this.editorUi.hideCurrentMenu();
                clickHandler(evt);
            }
        }));

        // Hides menu if already showing and prevents focus
        mxEvent.addListener(elt, (mxClient.IS_POINTER) ? 'pointerdown' : 'mousedown',
            mxUtils.bind(this, function(evt)
            {
                show = this.currentElt != elt;
                evt.preventDefault();
            }));

        mxEvent.addListener(elt, 'click', mxUtils.bind(this, function(evt)
        {
            clickHandler(evt);
            show = true;
        }));
    }
};

/**
 * Creates the keyboard event handler for the current graph and history.
 */
Menubar.prototype.destroy = function()
{
    // do nothing
};

/**
 * Constructs a new action for the given parameters.
 */
function Menu(funct, enabled)
{
    mxEventSource.call(this);
    this.funct = funct;
    this.enabled = (enabled != null) ? enabled : true;
};

// Menu inherits from mxEventSource
mxUtils.extend(Menu, mxEventSource);

/**
 * Sets the enabled state of the action and fires a stateChanged event.
 */
Menu.prototype.isEnabled = function()
{
    return this.enabled;
};

/**
 * Sets the enabled state of the action and fires a stateChanged event.
 */
Menu.prototype.setEnabled = function(value)
{
    if (this.enabled != value)
    {
        this.enabled = value;
        this.fireEvent(new mxEventObject('stateChanged'));
    }
};

/**
 * Sets the enabled state of the action and fires a stateChanged event.
 */
Menu.prototype.execute = function(menu, parent)
{
    this.funct(menu, parent);
};

/**
 * "Installs" menus in EditorUi.
 */
EditorUi.prototype.createMenus = function()
{
    return new Menus(this);
};